Samsung SGH-X427ZSACIN - Manual (Page 49)

Entering Text
45
Using Number Mode
Number mode enables you to enter numbers into a text
message. Press the keys corresponding to the digits you
want to enter.
Using Symbol Mode
Symbol mode enables you to insert symbols into a text
message.
Use the Navigation keys to scroll to a symbol and then
press the OK soft key to insert the highlighted symbol into
your message